Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Mitsuhiro Asakura"'
Publikováno v:
Tetrahedron. 74:2405-2413
Experimental and theoretical studies on the thermodynamics and properties of 2-substituted 6(4)-methyl-1,4(1,6)-dihydropyrimidine-5-carboxylates were undertaken by 1H NMR measurements and DFT (density functional theory) calculations. The ratios of ta
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::18bd67f9c2bb8224a5edad6bcd658a8e
https://doi.org/10.1016/j.tet.2018.03.032
https://doi.org/10.1016/j.tet.2018.03.032
Autor:
Nobuhiro Morita, Takanori Hirose, Tatsuya Sakaue, Yoshitaka Toyofuku, Mitsuhiro Asakura, Shinji Toyota, Michinori Oki
Publikováno v:
Russian Journal of Organic Chemistry. 39:542-553
X-ray crystallography of the ap-form of the 1-(9-fluorenyl)-2-(2-methyl-2-oxiranyl)naphthalene has revealed that the carbon atom of the oxirane which is connected to the naphthyl group in this compound is almost planar. The specific structural featur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9f1e4d21cef50ea16282bd99bee8496f
https://doi.org/10.1023/a:1026063919203
https://doi.org/10.1023/a:1026063919203
Publikováno v:
Bulletin of the Chemical Society of Japan. 75:2667-2671
The title carbonyl compounds bearing a 4,4-diphenyl-1,3,2-dioxaborolan-2-yl group at the ortho position were prepared to compare the Lewis basicity of carbonyl-oxygen atoms. In the benzoyl and formyl compounds, the intramolecular C=O···B interacti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::25ab6e04a13a41f8cc25e69ae1c69da0
https://doi.org/10.1246/bcsj.75.2667
https://doi.org/10.1246/bcsj.75.2667
Publikováno v:
Bulletin of the Chemical Society of Japan. 73:2357-2362
The structure and stereochemistry of the title organoboron compound, prepared from the corresponding organolithium compound and BCl3, were studied by spectroscopic methods and molecular orbital calculations. The X-ray crystal structure analysis shows
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eb804f2f2285548ad7fd15a250a5489f
https://doi.org/10.1246/bcsj.73.2357
https://doi.org/10.1246/bcsj.73.2357
Publikováno v:
Bulletin of the Chemical Society of Japan. 73:205-213
The substituent effect on the rotational barriers of acetylenic to tetrahedral C-C bonds was studied for the title compounds carrying Me or OMe substituents at the 1,4-positions in the 9-triptycyl groups. These compounds were prepared by use of the D
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::68768f00d1bfea70de9115d1f0b1738e
https://doi.org/10.1246/bcsj.73.205
https://doi.org/10.1246/bcsj.73.205
Autor:
Tsutomu Hidaka, Shinji Toyota, Nobuo Nakamura, Mitsuhiro Asakura, Hirotaka Ozaki, Kei Kaneko, Tomoyo Ishiguro, Michinori Oki, Takanori Hirose
Publikováno v:
Bulletin of the Chemical Society of Japan. 72:2327-2336
The title radical rotamers were generated by thermolyses of the corresponding t-butyl peroxycarboxylates or photolyses of the corresponding 2(1H)-thioxo-1-pyridyl carboxylates. Products from the t-butyl peroxyesters were t-butoxy compounds, dimers, a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::041184e47e8cdd80b06076f5e098cfb8
https://doi.org/10.1246/bcsj.72.2327
https://doi.org/10.1246/bcsj.72.2327
Publikováno v:
Bulletin of the Chemical Society of Japan. 72:1879-1885
Rates of the dissociation of the intramolecular B–N coordination bond in two series of phenylborane derivatives, the boronate and diethylborane complexes, with –CHMeNMe2 or –CMe2NMe2 group at the o-position were determined by the NMR lineshape
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::88ee7a874b339f7cb8181ed3b332f3d1
https://doi.org/10.1246/bcsj.72.1879
https://doi.org/10.1246/bcsj.72.1879
Autor:
Keisuke Kitahara, Michinori O¯ki, Shinji Toyota, Mitsuhiro Asakura, Nobuhiro Morita, Takanori Hirose
Publikováno v:
Tetrahedron Letters. 39:8877-8880
Oxidation of allyl phenyl selenide withm-chloroperoxybenzoic acid unexpectedly afforded two compounds, the structures of which were determined as 3-(m-chlorobenzoyloxy)-2-(phenylseleno)propan-1-ol and 2-(m-chlorobenzoyloxy)-3-(phenylseleno)propan-1-o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::07c6b8427611e0025ac4c5a1394ee497
https://doi.org/10.1016/s0040-4039(98)02020-6
https://doi.org/10.1016/s0040-4039(98)02020-6
Autor:
Mitsuhiro Asakura, Yuko Igarashi, Shinji Toyota, Michinori Oki, Akihiro Yasutomi, Hiroharu Kojima
Publikováno v:
Bulletin of the Chemical Society of Japan. 71:2715-2720
The title compound was prepared by addition of 4,5-dimethoxybenzyne to 9,9′-bianthryl. The rotational isomers, ap and ±sc, were separated by HPLC. The ±sc isomers were treated with sodium ethanethiolate to produce 3,3′-dihydroxy-2,2′-dimethox
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e2206ddbc58eb74aeffa6250377532cb
https://doi.org/10.1246/bcsj.71.2715
https://doi.org/10.1246/bcsj.71.2715
Publikováno v:
Organometallics. 17:4155-4163
To distinguish between dissociation of a B−N coordination bond by SN1- and SN2-type mechanisms, two series of 1,3,2-dioxaborolanes (boronates) and BEt2 (borane) complexes carrying a 2,6-bis((dimeth...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4847d332fb04d49f6096780832f8fa0f
https://doi.org/10.1021/om9803974
https://doi.org/10.1021/om9803974